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Package "openssh-server"

Name: openssh-server

Description:

secure shell (SSH) server, for secure access from remote machines

Latest version: 1:7.6p1-4ubuntu0.5
Release: bionic (18.04)
Level: security
Repository: main
Head package: openssh
Homepage: http://www.openssh.com/

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Other versions of "openssh-server" in Bionic

Repository Area Version
base main 1:7.6p1-4
updates main 1:7.6p1-4ubuntu0.7

Changelog

Version: 1:7.6p1-4ubuntu0.5 2021-08-12 13:06:18 UTC

  openssh (1:7.6p1-4ubuntu0.5) bionic-security; urgency=medium

  * SECURITY REGRESSION: User enumeration issue (LP: #1934501)
    - debian/patches/CVE-2018-15473.patch: updated to fix bad patch
      backport.

 -- Marc Deslauriers <email address hidden> Wed, 11 Aug 2021 14:02:09 -0400

Source diff to previous version
1934501 CVE-2018-15473 patch introduce user enumeration vulnerability
CVE-2018-15473 OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packe

Version: 1:7.6p1-4ubuntu0.3 2019-03-05 19:08:50 UTC

  openssh (1:7.6p1-4ubuntu0.3) bionic-security; urgency=medium

  * SECURITY UPDATE: Incomplete fix for CVE-2019-6111
    - debian/patches/CVE-2019-6111-2.patch: add another fix to the filename
      check in scp.c.
    - CVE-2019-6111
  * Fixed inverted CVE numbers in patch filenames and in previous
    changelog.

 -- Marc Deslauriers <email address hidden> Mon, 04 Mar 2019 07:17:51 -0500

Source diff to previous version
CVE-2019-6111 An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sen

Version: 1:7.6p1-4ubuntu0.2 2019-02-07 19:07:34 UTC

  openssh (1:7.6p1-4ubuntu0.2) bionic-security; urgency=medium

  * SECURITY UPDATE: access restrictions bypass in scp
    - debian/patches/CVE-2018-20685.patch: disallow empty filenames
      or ones that refer to the current directory in scp.c.
    - CVE-2018-20685
  * SECURITY UPDATE: scp client spoofing via object name
    - debian/patches/CVE-2019-6109.patch: make sure the filenames match
      the wildcard specified by the user, and add new flag to relax the new
      restrictions in scp.c, scp.1.
    - CVE-2019-6109
  * SECURITY UPDATE: scp client missing received object name validation
    - debian/patches/CVE-2019-6111-1.patch: sanitize scp filenames via
      snmprintf in atomicio.c, progressmeter.c, progressmeter.h,
      scp.c, sftp-client.c.
    - debian/patches/CVE-2019-6111-2.patch: force progressmeter updates in
      progressmeter.c, progressmeter.h, scp.c, sftp-client.c.
    - CVE-2019-6111

 -- Marc Deslauriers <email address hidden> Thu, 31 Jan 2019 08:58:34 -0500

Source diff to previous version
CVE-2018-20685 In OpenSSH 7.9, scp.c in the scp client allows remote SSH servers to bypass intended access restrictions via the filename of . or an empty filename.
CVE-2019-6109 An issue was discovered in OpenSSH 7.9. Due to missing character encoding in the progress display, a malicious server (or Man-in-The-Middle attacker)
CVE-2019-6111 An issue was discovered in OpenSSH 7.9. Due to the scp implementation being derived from 1983 rcp, the server chooses which files/directories are sen

Version: 1:7.6p1-4ubuntu0.1 2018-11-06 15:06:24 UTC

  openssh (1:7.6p1-4ubuntu0.1) bionic-security; urgency=medium

  [ Ryan Finnie ]
  * SECURITY UPDATE: OpenSSH User Enumeration Vulnerability (LP: #1794629)
    - debian/patches/CVE-2018-15473.patch: delay bailout for invalid
      authenticating user until after the packet containing the request
      has been fully parsed.
    - CVE-2018-15473

 -- <email address hidden> (Leonidas S. Barbosa) Mon, 05 Nov 2018 08:51:29 -0300

1794629 CVE-2018-15473 - User enumeration vulnerability
CVE-2018-15473 OpenSSH through 7.7 is prone to a user enumeration vulnerability due to not delaying bailout for an invalid authenticating user until after the packe



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